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General introduction of Low consumption Acid Pickling Production line/pickle line Design basis For coils to be washed: Cold-rolled carbon structural steel, high-quality carbon structural steel and low alloy steel coils. Steel type: Q195/235, ST12/13, SPCC, SPCD
Acid pickling This can be done under the following operating conditions, either with sulphuric acid (H 2 SO 4), or hydrochloric acid (HCl). H 2 SO 4 releases a lot of fumes and is ineffective under cold
Baoshan Iron & Steel pickling line/tandem cold mill 20-21 China Shougang Corporation pickling line/tandem cold mill 22-23 Tianjin Tiantie pickling line/tandem cold mill 24-25 Salzgitter Flachstahl continuous pickling line with acid regeneration 26-27
For carbon (C) steel, sulphuric (H2SO4) acid is used in most batch pickling operations, whereas hydrochloric (HCl) acid has become the pickling agent of choice, as of 1994, for continuous operations with hot rolled strip. Pickling with HCl acid started in 1964 and
In addition, the calculation of four initial speeds is specified, especially the initial tandem cold rolling mill entry speed. The proposed speed optimization algorithm was successfully applied to a 1450 mm continuous pickling line and tandem cold rolling mill.
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